How long is the flight from Belfast to San Francisco?

There are many flights that can get you from Belfast to San Francisco in 16h 20m. Fly via British Airways to get the fastest option. Belfast and San Francisco are separated by a distance of 5038 mi.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

What is the cheapest time of day to fly from BFS to SFO?

When flying from Belfast to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to San Francisco from Belfast?

Located just 11.0 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Belfast. Booking flights from Belfast to San Francisco (SFO) should be relatively easy as there are 0 daily inbound flights from Belfast from 0 different airlines.

Can I find deals for flights from Belfast to San Francisco that include hotel bookings?

Yes. In addition to deals on Belfast to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Belfast to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to San Francisco.

Can I find deals for business class flights from Belfast to San Francisco?

Yes. Cheapflights offers flight deals from Belfast to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£370+ Cheap Flights from Belfast to San Francisco

Cheap flight deals from Belfast to San Francisco

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Belfast to San Francisco
Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Thu 29/1006:30 -

1 stop16h 25m

Mon 2/1108:55 -

2 stops17h 55m

Deal found 16/9£542

Thu 19/1106:30 -

1 stop16h 25m

Sun 22/1108:55 -

2 stops17h 50m

Deal found 14/9£544

Tue 13/1012:40 -

2 stops18h 57m

Tue 20/1009:12 -

2 stops17h 33m

Deal found 15/9£544

Thu 19/1111:05 -

2 stops19h 30m

Sun 22/1116:00 -

2 stops16h 50m

Deal found 14/9£548

Tue 13/1019:30 -

1 stop26h 20m

Tue 20/1019:30 -

1 stop15h 25m

Deal found 15/9£611

Wed 28/1010:55 -

2 stops35h 55m

Wed 4/1116:45 -

2 stops20h 10m

Deal found 13/9£682

Sat 26/907:05 -

2 stops19h 57m

Thu 1/1015:41 -

2 stops19h 44m

Deal found 17/9£715

Thu 29/1017:20 -

2 stops34h 50m

Mon 2/1116:40 -

1 stop19h 15m

Deal found 16/9£788

Tue 20/1007:55 -

3 stops38h 40m

Tue 27/1014:50 -

2 stops23h 05m

Deal found 14/9£793

Tue 13/1017:10 -

2 stops29h 25m

Tue 20/1006:00 -

3 stops31h 20m

Deal found 15/9£810

Find flight deals from Belfast to San Francisco

Round-trip from	£542
One-way from	£370

29/10-2/11
3 total stops
34h 20m total
Belfast to San Francisco

Search Deals

22/11-31/12
3 total stops
32h 10m total
Belfast to San Francisco

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Sun 22/11

14:15-14:25

3 stops32h 10m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£370

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sun 22/11

12:05-14:25

3 stops34h 20m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£391

Fastest return journey

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sun 22/11

06:30-14:55

1 stop16h 25m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£429

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Mon 23/11

06:35-14:55

1 stop16h 20m

San Francisco

Tue 8/12

13:42-16:45

2 stops19h 03m

£544

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 19/11

11:05-22:35

2 stops19h 30m

San Francisco

Sun 22/11

16:00-16:50

2 stops16h 50m

£548

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 29/10

06:30-15:55

1 stop16h 25m

San Francisco

Mon 2/11

17:25-17:25

1 stop16h 00m

£573

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 21/1

20:00-15:35

2 stops27h 35m

San Francisco

Mon 25/1

17:25-17:25

1 stop16h 00m

£573

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Wed 28/10

10:55-15:50

2 stops35h 55m

San Francisco

Wed 4/11

16:45-20:55

2 stops20h 10m

£682

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Tue 13/10

17:10-14:35

2 stops29h 25m

San Francisco

Tue 20/10

06:00-21:20

3 stops31h 20m

£810

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Thu 29/10

14:30-21:10

1 stop37h 40m

San Francisco

Mon 2/11

16:40-07:30

1 stop30h 50m

£813

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 11 resultsSorted by cheapest first

Best time to book a flight from Belfast to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Belfast with our price prediction graph.

BF1-SFO

BFS-SFO

BHD-SFO

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Belfast to San Francisco

BF1-SFO

BFS-SFO

BHD-SFO

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly into for flights to San Francisco from Belfast?
Located just 11.0 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Belfast. Booking flights from Belfast to San Francisco (SFO) should be relatively easy as there are 0 daily inbound flights from Belfast from 0 different airlines.
How long is the flight from Belfast to San Francisco?
There are many flights that can get you from Belfast to San Francisco in 16h 20m. Fly via British Airways to get the fastest option. Belfast and San Francisco are separated by a distance of 5038 mi.
Can I find deals for flights from Belfast to San Francisco that include hotel bookings?
Yes. In addition to deals on Belfast to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Belfast to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to San Francisco.
Can I find deals for business class flights from Belfast to San Francisco?
Yes. Cheapflights offers flight deals from Belfast to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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How does Cheapflights help users find flights from Belfast to San Francisco?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco from Belfast today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Belfast to San Francisco?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Belfast to San Francisco.

Can Cheapflights find flights from Belfast to San Francisco with no change fees?

Certainly. Search results for flights to San Francisco from Belfast shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Belfast to San Francisco become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from Belfast today and book when prices fit your budget.

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Cheap flights from Belfast to San Francisco from £370

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Belfast to San Francisco

Cheapest flights from Belfast to San FranciscoExplore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Best flights from Belfast to San FranciscoDiscover carefully curated flight deals from Belfast to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Discover carefully curated flight deals from Belfast to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Last-minute flights from Belfast to San FranciscoDiscover last-minute flight deals from Belfast to San Francisco. Data last updated 17 September 2026 and is based on user searches.

Discover last-minute flight deals from Belfast to San Francisco. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Belfast to San FranciscoSearch for one-way flight options from Belfast to San Francisco. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Search for one-way flight options from Belfast to San Francisco. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Find flight deals from Belfast to San Francisco

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Use the filters below to find and compare flights from Belfast to San Francisco that are best for you.

Best time to book a flight from Belfast to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Belfast with our price prediction graph.

Cheapflights Insights

Related info for your journey

What airport do you fly into for flights to San Francisco from Belfast?

How long is the flight from Belfast to San Francisco?

Can I find deals for flights from Belfast to San Francisco that include hotel bookings?

How can I find direct flights from Belfast to San Francisco?

Can I find deals for business class flights from Belfast to San Francisco?

Travelling to a place near San Francisco?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Belfast to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to San Francisco by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to California

Book a non-stop flight to one of these other cities located in California.

Search flights from Belfast to San Francisco by cabin class

Find flights from Belfast to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Belfast and San Francisco flights

Browse other Belfast and San Francisco flight options. Last updated on 17 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Other flights to San Francisco

Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 17 September 2026.

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How does Cheapflights help users find flights from Belfast to San Francisco?

Why should you use Cheapflights to find cheap flight tickets from Belfast to San Francisco?

Can Cheapflights find flights from Belfast to San Francisco with no change fees?

Can Cheapflights notify me if prices for flights from Belfast to San Francisco become cheaper?

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Cheapest flights from Belfast to San Francisco
Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Best flights from Belfast to San Francisco
Discover carefully curated flight deals from Belfast to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Last-minute flights from Belfast to San Francisco
Discover last-minute flight deals from Belfast to San Francisco. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Belfast to San Francisco
Search for one-way flight options from Belfast to San Francisco. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.